Eric Roy, a chemist and founder of Hydroviv, received a $400,000 investment from Cuban in exchange for a 20 percent interest in the company during the show that aired Sunday, April 14.

Roy said his company grew out of his own work building filters, especially for Flint’s water after the city’s water source was changed to the Flint River and lead levels shot above above federal drinking water guidelines.

In January 2016, just months after the city disconnected from river water, federal officials said lead levels in some homes were so high they overwhelmed the lead-removing capacity of standard filters.

“The existing water filters on the market weren’t designed to handle that (level of lead),” Roy said in introducing his product on “Shark Tank.”

“I set up in my studio apartment in Washington, D.C., and just started building high capacity lead removal filters and directing them to people and child-centric organizations in Flint.”

In an email to MLive-The Flint Journal, Roy said he donated more than 500 filtration systems and about 1,000 replacement cartridges in Flint, and set up a GoFundMe page to help pay part of the cost of the filters.

“I also acted as a scientific adviser for some of the more prominent activists in Flint so they could at least have good information,” his email said.

Today, Hydroviv uses water quality data from specific water systems to make filters designed to remove the specific contaminants from water, according to the company’s website.

“I love products that do well by doing good,” Cuban said of the company during the show.

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